test/py: run all "ut" subtests

Invoke each "ut"-based unit test as a separate pytest.

Now that the DM unit test runs under test/py, remove the manual shell
script that invokes it.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Acked-by: Simon Glass <sjg@chromium.org>
Tested-by: Simon Glass <sjg@chromium.org> # v2, on sandbox
diff --git a/test/py/tests/test_ut.py b/test/py/tests/test_ut.py
new file mode 100644
index 0000000..5c25a2d
--- /dev/null
+++ b/test/py/tests/test_ut.py
@@ -0,0 +1,29 @@
+# Copyright (c) 2016, NVIDIA CORPORATION. All rights reserved.
+#
+# SPDX-License-Identifier: GPL-2.0
+
+import os.path
+import pytest
+
+@pytest.mark.buildconfigspec('ut_dm')
+def test_ut_dm_init(u_boot_console):
+    """Initialize data for ut dm tests."""
+
+    fn = u_boot_console.config.source_dir + '/testflash.bin'
+    if not os.path.exists(fn):
+        data = 'this is a test'
+        data += '\x00' * ((4 * 1024 * 1024) - len(data))
+        with open(fn, 'wb') as fh:
+            fh.write(data)
+
+    fn = u_boot_console.config.source_dir + '/spi.bin'
+    if not os.path.exists(fn):
+        data = '\x00' * (2 * 1024 * 1024)
+        with open(fn, 'wb') as fh:
+            fh.write(data)
+
+def test_ut(u_boot_console, ut_subtest):
+    """Execute a "ut" subtest."""
+
+    output = u_boot_console.run_command('ut ' + ut_subtest)
+    assert output.endswith('Failures: 0')